66.135.121 is a class C of IPs

Sample IPs from the class C 66.135.121

66.135.121.54	View precise location of 66.135.121.54 on the map!
66.135.121.28	View precise location of 66.135.121.28 on the map!
66.135.121.202	View precise location of 66.135.121.202 on the map!
66.135.121.175	View precise location of 66.135.121.175 on the map!
66.135.121.82	View precise location of 66.135.121.82 on the map!
66.135.121.208	View precise location of 66.135.121.208 on the map!
66.135.121.106	View precise location of 66.135.121.106 on the map!
66.135.121.226	View precise location of 66.135.121.226 on the map!
66.135.121.216	View precise location of 66.135.121.216 on the map!
66.135.121.236	View precise location of 66.135.121.236 on the map!
66.135.121.13	View precise location of 66.135.121.13 on the map!

10 Random IPs

156.160.181.133	Find precise map location of 156.160.181.133
101.165.73.24	Find precise map location of 101.165.73.24
198.204.23.245	Find precise map location of 198.204.23.245
140.184.96.170	Find precise map location of 140.184.96.170
239.160.234.192	Find precise map location of 239.160.234.192
212.65.236.41	Find precise map location of 212.65.236.41
221.30.1.108	Find precise map location of 221.30.1.108
90.156.169.67	Find precise map location of 90.156.169.67
66.73.55.160	Find precise map location of 66.73.55.160
160.181.86.141	Find precise map location of 160.181.86.141
63.138.1.73	Find precise map location of 63.138.1.73

TestURI.org is a free web-sniffer.net alternative. It alows you to send custom HTTP request and check the HTTP response.